Internal combustion engine



@cfi. 311, 1933. L, M WQOLSQN 1,933,293

INTERNAL COMBUSTION ENGINE Filed Dec. 30, 1929 gnaw 01, .LJUNEL M NUUL 502v.

PatentedOct 31, 1933 v a V i 1,933,293

INTERNAL COMBUSTION ENGINE Lionel M. Woolson, Detroit, Mich, assignor to I Packard Motor Car Company, Detroit, Mich.,- F a corporation of Michigan Application December 30, 1929' Serial No. 417,336

'10 Claims. (Cl. '121194) This invention relates to internal combustion era-l wall of the crank case can be close or not as engines and more particularly to a cylinder and may be desired. Cylinder heads 21 are each procrank case structure. vided with a neck 22 through which a passage An object of my invention .is to provide'an extends for the admission of air and for the 5. internal combustion engine in which theexploescape of exhaust, there being suitable valve 60 sion loads in the cylinders are. distributed in a mechanism controlling such passages. manner "such that there will be no localized The engine illustrated is of the Diesel type, and stresses in the crank case. while no fuel injection device has been illus- Anotherobject of my invention is to associate trated some suitable arrangement is provided for 10. cylinders and a crank case in a manner such injecting liquid fuel into the compressedair in thatthin walls can be utilized-to form the crank the cylinders in order to form the combustion case even though compression pressure in the charge. Engines operating upon other than the cylinders may reach more than 5% pounds per Diesel principle can, howeven'be constructed in square inch: accordancewith this invention,

15. A further object of the invention is to provide The flanges 19 are formed so that they extend 70 an engine in which the cylinders are fastened adjacent each other when assembled with the around the crank case by tension means to secrank case, and for thepurpose of securing the cure them in position ina manner distributing same they are provided with upstanding end explosive loads so that there will be no localized portions 23. I Each adjacent pair of such end zostresses. portions 23 are drawn toward each other and 75 These and other objects of the invention will connected in tension by the bolts 24. The conappear from the following description taken in nected flanges of the cylinders provide tension. connection with the drawing whichforms a part means extending around the peripheral wall of of the specification, and in which; the crank case in two lines and such tension is Fig. 1 is a front elevational view of an airplane I 'suiiicient to cause compression of the crank case. 0

engine, partially broken away, constructedin ac- Any explosion loads in the cylinders will be cordance with my invention; transmitted, through the bolts and the connect- Fig. 2is a sectional view of the sametaken on ed flanges, around. the crank case and in this line 2-2 of Fig. l. manner the explosion loads are widely distrib- Referring now to the drawing by characters uted so that'there will be no localized stresses s5 of reference, 10 represents generally the crank in the crank case. The manner of connecting case of a radial type of internal combustion engine the cylinders together, which serves as a tension adapted particularly for use as the power plant or hoop means, also fastens the cylinder strucof an airship. The crank case is preferably turessecurely in position upon the crank case. formed of duralumin and consists of a plurality The bolts are detachable, and when detached the of transversely extending spaced walls as indicylinders'can be readily removed from each other cated at 11 and 12 and a peripheral wall 13. and from the crank case, the accessories associ- The crank case is substantially in the form of a ated therewith (not shown) must of course be barrel, and the transverse walls form a compartfirst disconnected to permit such removal.

40.n1ent l l which the connecting rod assembly Because of this manner of transmitting ex- 15 is associated with the crankshaft 16 which plosion loads to the crank case so that localized extends axially through the crank case. Secured stresses therein are eliminated, the crank case to the exterior end of the crank shaft is a procan be formed of very thin metal which permits peller hub 17. the building of an engine for use with airships- 45.. A plurality of cylinders 18 project radially which is capable of withstanding the compression through openings formed in the peripheral wall pressures and explosion loads developed when of the crank case and are each formed with a using the Diesel principle.

flange 19 which extends transversely relative to While I have herein describedin some detail the axis thereof, such flanges being fiat on their a specific embodiment of my invention, which I 50 underside in order that they may be seated deem to be new and advantageous and may speagainst the flat faces 20 formed'on the crank case cifically claim, I do not desire it to be underadjacent the openings through which the cylinstood that my invention is limited to the exact ders project. It will-be seen that the inner ends details of the construction, as it will be apparent of the cylinders project into the compartment 14 that changes may be made therein without de- 55 and the fit between the'cylinders and the periphparting from the spirit or scope of my invention. 11c

in spaced aligned relation, and adjustable means connecting the spaced adjacent flanges of adjacent cylinders together in tension;

3. In an internal combustion engine, a crank case, aplurality of cylinders each having flange extending therefrom substantially normal to the axis thereof and bearing against the crank case, the crank case, the adjacent flanges of adjacent cylinders being arranged in spaced aligned relation, and detachable means connecting the adjacent flanges of adjacent cylinders together in tension.

4. In an internal combustion engine having a barrel type,- crank case and a plurality of radially disposed cylinders, tension means for securing the cylinders to the crank case comprising a flange extending from eachcylinder and bearing against the crank case, the adjacent flanges or" adjacent cylinders, being in spaced relation, and means, initially securing adjacent ends of adjacent spaced flanges together in tension.

barrel type crank case and a plurality of radially disposed cylinders, means for securing the cylinders to the crank case comprising flanges extending from each cylinder normal to the axis thereof and engaging the crank case, the adjacent ends of the flanges being out-turned and spaced apart, and tension means engagingand securing together the adjacent out-turned ends of the adjacent flanges in tension.

6. In an internal combustion engine having a barrel type crank case and a plurality of 5. In an internal combustion engine having a radially disposed cylinders, means for securing the cylinders in the crank case comprising flanges extending from each cylinder and ter-' minating at adjacent ends in upturned flangesf the upturned flanges of adjacent cylinders being in spaced relation, and tension means connecting the adjacent upturned ends of adjacent flanges. r

7. In an engine, the combination of a crank case, a plurality of cylinders disposed radially around the crank case, cylinder extensions bearing against the periphery of the crank case, the

crank case, the adjacent ends of the flanges of adjacent cylinders being upturned and'spaced apart, and means connecting each adjacent pair of upstanding portions of. adjacent flanges. in tension.

9. In an internal combustion engine having a barrel-type crank case and a'plurality of cylinders disposed radially around the crank case, means for securing the cylinders to the crank case comprising flanges having their end portions, extending between the cylinders turned out, said flanges bearing against the periphery of the crank case and with the adjacent turnedzout portions of adjacent flanges in spaced relation, and means similarly engaging the turned out end portions of the adjacent pairs of flanges and maintaining them in tension extending in two lines around the crank case.

10. In an internal combustion engine, acrank case, a plurality of radially extending cylinders, flanges extending around the cylinders and bearing against the crank case, the adjacent portions of the flanges of adjacent cylinders being spaced relatively and from the crank case, and means connecting the adjacent spaced flanges of adjacent cylinders together in tension.

LIONEL M. WooLsoN.

ctanrtrtcttrrz or concise-non Patent No. 1,933,293. October 31, 1933.

LIONEL M. wooLs0N.

It is hereby certified that error appears in the printed specifications of the above numbered patent requiring correction as follows: ?age 2, line 95, claim 8, strike out the words "peripheral wall of the" and insert the same after "through the" in line 93, of same claim; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 19th day of December, A. D. 1933.

Richard Spencer (Seal) Acting Commissioner of Patents. 

